const electron = require('electron')
// Module to control application life.
const app = electron.app
// Module to create native browser window.
const BrowserWindow = electron.BrowserWindow
 
const path = require('path')
const url = require('url')
const pkg = require('./package.json') // 引用package.json 
 
// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow
 
function createWindow() {
    // Create the browser window.
    mainWindow = new BrowserWindow({
      width: 800, 
      height: 600,
      webPreferences: {
        javascript: true,
        plugins: false,
        nodeIntegration: false, // 不集成 Nodejs
        preload: path.join(__dirname, './public/renderer.js') // 但预加载的 js 文件内仍可以使用 Nodejs 的 API
      }
    })
 
    // and load the index.html of the app.
 
 const argv = process.argv.slice(2)


// 对createWindow 函数中的内容进行修改
//判断是否是开发模式
 if (argv && argv[1] == 'dev') {
   mainWindow.loadURL("http://localhost:3000/")
 } else if (argv && argv[1] == 'build') {
   // window 加载build好的html.
   mainWindow.loadURL(url.format({
     pathname: path.join(__dirname, './build/index.html'),
     protocol: 'file:',
     slashes: true
   }))
 }
 
    // Open the DevTools.
    // mainWindow.webContents.openDevTools()
 
    // Emitted when the window is closed.
    mainWindow.on('closed', function () {
        // Dereference the window object, usually you would store windows
        // in an array if your app supports multi windows, this is the time
        // when you should delete the corresponding element.
        mainWindow = null
    })
}
 
// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)
 
// Quit when all windows are closed.
app.on('window-all-closed', function () {
    // On OS X it is common for applications and their menu bar
    // to stay active until the user quits explicitly with Cmd + Q
    if (process.platform !== 'darwin') {
        app.quit()
    }
})
 
app.on('activate', function () {
    // On OS X it's common to re-create a window in the app when the
    // dock icon is clicked and there are no other windows open.
    if (mainWindow === null) {
        createWindow()
    }

})


electron.ipcMain.on('chooseFolder', function(){
    const dialog = electron.dialog;
    dialog.showOpenDialog(mainWindow, {
        properties: ['openDirectory']
    });
});